Optical member driving mechanism

ABSTRACT

An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, a first circuit assembly, and a second circuit assembly. The fixed portion includes a housing, a frame, and a base. The frame is affixed to the housing. The base is fixedly connected to the housing. The movable portion is movably connected to the fixed portion, and carries an optical element, wherein the optical element has an optical axis. The driving assembly drives the movable portion to move relative to the fixed portion. The first circuit assembly is disposed in the frame, and electrically connected to the driving assembly. The second circuit assembly is disposed on the base.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application No.62/670,580, filed May 11, 2018, and U.S. Provisional Application No.62/677,753, filed May 30, 2018, the entirety of which are incorporatedby reference herein.

BACKGROUND Technical Field

The disclosure relates to an optical member driving mechanism, and inparticular to an optical member driving mechanism including a frame anda base, where circuit assemblies are disposed.

Description of the Related Art

With the development of technology, many electronic devices (such assmartphones and digital cameras) nowadays perform a camera or videofunction. The usage of these electronic devices has become increasinglywidespread, and the electronic devices have been designed forconvenience and miniaturization to provide more choices for users.

The electronic devices with a camera or video function usually have alens driving module disposed therein to drive a lens to move along anoptical axis. Therefore, an autofocus (AF) function is achieved. Lightmay pass through the lens and form an image on a photosensitive member.However, the miniaturization of the electronic devices gradually becomesa mainstream of the consuming requirement, and the thickness of theelectronic devices usually depends on the thickness of the lens drivingmodule. Therefore, how to reduce the thickness of the lens drivingmodule has become an important topic.

BRIEF SUMMARY

The present disclosure provides an optical member driving mechanism. Theoptical member driving mechanism includes a fixed portion, a movableportion, and a driving assembly. The fixed portion includes a housing, aframe, a circuit component, and a base. The housing includes a top walland a plurality of sidewalls, forming a first containing space. Theframe is disposed in the first containing space, and has a secondcontaining space. The circuit component is disposed in the frame. Thebase is connected to the housing. The movable portion is movablyconnected to the fixed portion, and carries an optical member. The topwall is perpendicular to an optical axis of the optical member. Thesidewalls extend from the top wall along the optical axis. The drivingassembly drives the movable portion to move relative to the fixedportion, is electrically connected to the circuit component andpartially disposed in the second containing space.

In an embodiment, the optical member driving mechanism further includesa first elastic member that is elastically connected to the movableportion and the fixed portion. The frame further includes a firstsurface and a second surface, and the first surface and the secondsurface face the top wall. The distance between the first surface andthe top wall is shorter than the distance between the second surface andthe top wall, and the first elastic member is disposed on the secondsurface.

In an embodiment, the circuit component is partially exposed from thesecond surface and electrically connected to the first elastic member.The driving assembly is electrically connected to the circuit componentvia the first elastic member. The circuit component is connected to thefirst elastic member by welding or arranging conductive gel. In anembodiment, the housing further includes an insulating structure that isdisposed on a surface of the housing, and the surface faces the frame.The top wall of the housing recesses along the optical axis towards thefirst elastic member corresponds to the connecting point between thefirst elastic member and the second surface, and abuts the first elasticmember.

In an embodiment, the optical member driving mechanism further includesa second elastic member that is elastically connected to the movableportion and the fixed portion. The frame further includes a thirdsurface that faces the base, and the second elastic member is disposedon the third surface. The base is made of metallic materials. Thecircuit component is partially exposed from the third surface and iselectrically connected to the second elastic member, and the drivingassembly is electrically connected to the circuit component via thesecond elastic member. The optical member driving mechanism furtherincludes an insulating layer that is disposed on the base.

In an embodiment, the frame further includes a plurality of protrudingportions, and the second containing space is located between theprotruding portions. The protruding portions each have a surface facingthe movable portion. The optical member driving mechanism furtherincludes a position-sensing assembly, which includes a reference memberand a position sensor, wherein the frame is partially located betweenthe reference member and the position sensor. The optical axis is offsetfrom a geometry center of the housing.

In an embodiment, the frame is substantially C-shaped and forms anopening, the frame further includes three rims, and the secondcontaining space is formed by the rims. The movable portion furtherincludes a positioning portion, the movable portion is disposed in thesecond containing space, and the positioning portion is located in theopening of the frame.

In an embodiment, the housing further includes a plurality of bondingportions disposed on a bottom surface of the housing. The base furtherincludes a plurality of recesses around the base, and when the housingand the base are bonded together, the bonding portions each are bondedto the recesses. The housing and the base are connected by welding orsoldering.

The present disclosure provides an optical member driving mechanism. Theoptical member driving mechanism includes a fixed portion, a movableportion, a first elastic member, and a driving assembly. The fixedportion includes a housing, a frame, a circuit component, and a base.The housing includes a top wall and a plurality of sidewalls, wherein afirst containing space is formed by the sidewalls and the top wall. Theframe is disposed in the first containing space. The circuit componentis disposed in the frame. The base is fixedly connected to the housing.The movable portion is movably connected to the fixed portion andcarries an optical member with an optical axis. The top wall isperpendicular to the optical axis. The sidewalls extend from the topwall along the optical axis, and the circuit component extends along theoptical axis. The first elastic member is disposed on the frame andelectrically connected to the circuit component. The first elasticmember has a plate structure, and a thickness direction of the firstelastic member is parallel to the optical axis. The driving assemblydrives the movable portion to move relative to the fixed portion and iselectrically connected to the circuit component. The driving assembly ispartially disposed in the second containing space.

In an embodiment, the movable portion further includes a wiring column.The wiring column is disposed on one side of the movable portion andfaces the circuit component. In an embodiment, the optical memberdriving mechanism further includes a second elastic member locatedbetween the housing and the frame. The size of the frame is greater thanor equal to the size of the second elastic member as viewed in adirection that is perpendicular to the optical axis. As viewed in theoptical axis, two sides of the frame at least partially overlap with thesecond elastic member, and the sides are opposite sides of the frame.

In an embodiment, the movable portion further includes a plurality ofstopping portions protruding from the movable portion towards the base,the stopping portions include a first stopping portion and a secondstopping portion. The size of the first stopping portion is greater thanthe size of the second stopping portion, and the distance between thefirst stopping portion and the base is shorter than the distance betweenthe second stopping portion and the base. The first stopping portion andthe second stopping portion are located on different sides of themovable portion.

In an embodiment, the optical member driving mechanism further includesan insulating layer disposed on a surface of the base, wherein thesurface faces the first elastic member. The movable portion furtherincludes a plurality of stopping portions protruding from the movableportion towards the base. As viewed in the optical axis, the stoppingportions and the insulating layer do not overlap. In an embodiment, theoptical member driving mechanism further includes a second elasticmember located between the housing and the frame. The frame furtherincludes a plurality of positioning columns, and the second elasticmember is connected to the frame via the positioning columns. Thehousing has a plurality of holes, and the positioning columns each aredisposed in the holes.

In an embodiment, the optical member driving mechanism further includesa second elastic member located between the housing and the frame. Asviewed along the optical axis, the second elastic member and the drivingassembly at least partially overlap on one side of the frame, the framefurther includes a protruding portion located on another side of theframe, and the top surface of the protruding portion is level with thetop surface of the second elastic member.

In an embodiment, the frame further includes a protruding column and ahole located on a surface of the frame, the surface faces the base, andthe first elastic member is connected to the frame via the protrudingcolumn and the hole. The driving assembly further includes two drivingcoils and a connecting wire connected to the driving coils, theconnecting wire and the circuit component at least partially overlap asviewed in a direction that is perpendicular to the optical axis, and theconnecting wire and the circuit component are located on opposite sidesof the movable portion.

In an embodiment, the frame further includes a plurality of positioningstructure abutting the driving assembly, and the driving assembly islocated between the positioning structure and the housing.

The present disclosure provides an optical member driving mechanism. Theoptical element driving mechanism includes a fixed portion, a movableportion, a driving assembly, a first circuit assembly, and a secondcircuit assembly. The fixed portion includes a housing, a frame, and abase. The frame is affixed to the housing. The base is fixedly connectedto the housing. The movable portion is movably connected to the fixedportion, and carries an optical element, wherein the optical element hasan optical axis. The driving assembly drives the movable portion to moverelative to the fixed portion. The first circuit assembly is disposed inthe frame, and electrically connected to the driving assembly. Thesecond circuit assembly is disposed on the base.

In an embodiment, the optical member driving mechanism further includesa position-sensing assembly, which detects the movement of the movableportion relative to the fixed portion. The second circuit assembly iselectrically connected to the position-sensing assembly. In anembodiment, the housing, the frame, and the base are sequentiallyarranged along the optical axis.

In an embodiment, the frame has a plurality of protruding portionsextending towards the base. The optical member driving mechanism furtherincludes a damping material that is disposed between the protrudingportions and the movable portion. In an embodiment, the driving assemblydrives the movable portion to move along the optical axis.

In an embodiment, the first circuit assembly includes a first electricalcontact and a second electrical contact, both of which are located on aplane of the frame. The first circuit assembly has a stereoscopicstructure and distributes on a plurality of planes. The second circuitassembly has a stereoscopic structure and distributes on a plurality ofplanes.

In an embodiment, the first circuit assembly and the second circuitassembly partially overlap as viewed in a direction that isperpendicular to the optical axis. The first circuit assembly iselectrically connected to the second circuit assembly. In an embodiment,the optical member driving mechanism further includes an elastic memberthat is disposed between the housing and the frame. The elastic memberis electrically connected to the driving assembly and the first circuitassembly.

The present disclosure provides an optical member driving mechanism. Theoptical element driving mechanism includes a fixed portion, a movableportion, a driving assembly, a first circuit assembly, and a secondcircuit assembly. The fixed portion includes a housing, a frame, and abase. The frame is affixed to the housing. The base is fixedly connectedto the housing. The movable portion is movably connected to the fixedportion, and carries an optical element.

The present disclosure provides an optical member driving mechanism. Theoptical element driving mechanism has a main axis, and includes a fixedportion, a movable portion, and a driving assembly. The fixed portionincludes a housing, a base, and a frame. The base is fixedly connectedto the housing along the main axis. The frame is disposed in thehousing, and has a plurality of protruding columns extending along themain axis. The protruding columns have a first section and a secondsection, and the first section is closer to the base than the secondsection. The movable portion is movable relative to the fixed portion,and carries an optical element. The shortest distance between the firstsection and the movable portion is longer than the shortest distancebetween the second section and the movable portion. The driving assemblydrives the movable portion to move relative to the fixed portion.

In an embodiment, the optical member driving mechanism further includesa circuit component disposed on one side of the frame, wherein thecircuit component extends along the main axis. As viewed in the mainaxis, the housing is aligned with the base on the side, and the housingis not aligned with the base on another side of the frame. As viewed ina direction that is perpendicular to the main axis, the housing and thebase do not overlap. A step is formed by the housing and the base.

In an embodiment, the frame includes a protruding portion, and a hole isformed by the protruding portion and the circuit component. The opticalmember driving mechanism further includes an elastic member that isconnected to the movable portion and the frame. The elastic memberincludes a first electrical contact, which extends into the hole. In anembodiment, the elastic member further includes a second electricalcontact that is electrically connected to the driving assembly, and theextending direction of the first electrical contact is different fromthe extending direction of the second electrical contact.

In an embodiment, the optical member driving mechanism further includesa circuit component disposed on one side of the frame. The base includesa barrier that extends away from the housing. The barrier abuts thecircuit component in a first direction, and the first direction isperpendicular to the main axis. A gap is formed between the barrier andthe base in a second direction, and the second direction isperpendicular to the main axis and the first direction.

In an embodiment, the housing has a first magnetic permeability, thebase has a second magnetic permeability, and the first magneticpermeability is different from the second magnetic permeability. In anembodiment, the optical member driving mechanism further includes areference member that is disposed in the movable portion, wherein themovable portion includes a first stopping portion. The first stoppingportion protrudes towards the base, and the reference member and thefirst stopping portion overlap as viewed in the main axis.

In an embodiment, the optical member driving mechanism further includesan elastic member that is connected to the movable portion and theframe. The movable portion further includes a second stopping portionthat protrudes towards the base, and the distance between the secondstopping portion and the base is shorter than the distance between theelastic member and the base. The optical member driving mechanismfurther includes at least one damping material that is disposed betweenthe movable portion and the protruding columns.

In an embodiment, the driving assembly includes a magnetic member thatis disposed in the frame. The frame includes a positioning portion thatis located between the magnetic member and the housing. In anembodiment, a groove is formed between the frame and the magneticmember. The groove is located on a connecting line of two of theprotruding columns, and the two protruding columns are adjacent to oneanother.

In an embodiment, the movable portion further includes at least one sidestopping portion that is formed at a corner of the movable portion. Theside stopping portion faces the frame in a direction that isperpendicular to the main axis. The housing further includes a firstsurface and a second surface, wherein the first surface is closer to thebase than the second surface, and the first surface and the protrudingcolumns overlap as viewed in the main axis.

In an embodiment, the movable portion further includes an upper stoppingportion and an adhesive groove, wherein the upper stopping portionprotrudes towards the housing along the main axis, and the adhesivegroove is adjacent to the upper stopping portion. As viewed in the mainaxis, the frame and the movable portion partially overlap.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is a perspective view illustrating an optical member drivingmechanism in accordance with an embodiment of the present disclosure.

FIG. 2 is an exploded view illustrating the optical member drivingmechanism shown in FIG. 1.

FIG. 3 is a cross-sectional view illustrating along line A-A′ shown inFIG. 1.

FIG. 4 is a top view illustrating an interior structure of the opticalmember driving mechanism in accordance with an embodiment of the presentdisclosure.

FIG. 5 is a top view illustrating the optical member driving mechanismshown in FIG. 1.

FIG. 6 is a cross-sectional view illustrating the optical member drivingmechanism in accordance with an embodiment of the present disclosure.

FIG. 7 is a cross-sectional view illustrating the optical member drivingmechanism in accordance with another embodiment of the presentdisclosure.

FIG. 8 is a side view illustrating a frame and a circuit component inaccordance with an embodiment of the present disclosure.

FIG. 9 is a partial perspective view illustrating the optical memberdriving mechanism in accordance with an embodiment of the presentdisclosure.

FIG. 10 is a cross-sectional view illustrating along line B-B′ shown inFIG. 1.

FIG. 11 is a perspective view illustrating an optical member drivingmechanism in accordance with another embodiment of the presentdisclosure.

FIG. 12 is an exploded view illustrating the optical member drivingmechanism shown in FIG. 11.

FIG. 13 is a perspective view illustrating a frame, a carrier, and asecond elastic member in accordance with an embodiment of the presentdisclosure.

FIG. 14 is a bottom view illustrating the frame, the carrier, and afirst elastic member in accordance with another embodiment of thepresent disclosure.

FIG. 15 is a perspective view illustrating the carrier and a circuitcomponent in accordance with an embodiment of the present disclosure.

FIG. 16 is a perspective view illustrating the carrier in accordancewith another embodiment of the present disclosure.

FIG. 17 is a perspective view illustrating an optical member drivingmechanism in accordance with an embodiment of the present disclosure.

FIG. 18 is an exploded view illustrating the optical member drivingmechanism shown in FIG. 17.

FIG. 19 is a cross-sectional view illustrating along line C-C′ shown inFIG. 17.

FIG. 20 is a perspective view illustrating a frame and a first circuitassembly in accordance with an embodiment of the present disclosure.

FIG. 21 is a perspective view illustrating a base and a second circuitassembly in accordance with an embodiment of the present disclosure.

FIG. 22 is top view illustrating an interior structure of the opticalmember driving mechanism shown in FIG. 17.

FIG. 23 is a perspective view illustrating an optical member drivingmechanism in accordance with an embodiment of the present disclosure.

FIG. 24 is an exploded view illustrating the optical member drivingmechanism shown in FIG. 23.

FIG. 25A is a cross-sectional view illustrating along line D-D′ shown inFIG. 23.

FIG. 25B is an enlarged view illustrating region P shown in FIG. 25A.

FIG. 26A is a partial perspective view illustrating the interiorstructure of the optical member driving mechanism in accordance with anembodiment of the present disclosure.

FIG. 26B is a cross-sectional view illustrating along line E-E′ shown inFIG. 26A.

FIG. 27 is a partial perspective view illustrating the interiorstructure of the optical member driving mechanism shown in FIG. 23.

FIG. 28A is a bottom view illustrating the optical member drivingmechanism in accordance with an embodiment of the present disclosure.

FIG. 28B is an enlarged view illustrating region Q shown in FIG. 28A.

FIG. 29 is a bottom view illustrating the interior structure of theoptical member driving mechanism in accordance with an embodiment of thepresent disclosure.

FIG. 30 is a bottom view illustrating the frame and the carrier shown inFIG. 29.

FIG. 31 is a perspective view illustrating the interior structure of theoptical member driving mechanism in accordance with an embodiment of thepresent disclosure.

DETAILED DESCRIPTION OF THE INVENTION

The optical member driving mechanisms of some embodiments of the presentdisclosure are described in the following description. However, itshould be appreciated that the following detailed description of someembodiments of the disclosure provides various concepts of the presentdisclosure which may be performed in specific backgrounds that can varywidely. The specific embodiments disclosed are provided merely toclearly describe the usage of the present disclosure by some specificmethods without limiting the scope of the present disclosure.

Unless defined otherwise, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this disclosure belongs. It shouldbe appreciated that, in each case, the term, which is defined in acommonly used dictionary, should be interpreted as having a meaning thatconforms to the relative skills of the present disclosure and thebackground or the context of the present disclosure, and should not beinterpreted in an idealized or overly formal manner unless so defined inthe present disclosure. In addition, it should be understood that theterms “first,” “second,” “third,” etc. used in the following paragraphsof the present specification and the claims are merely intended todistinguish multiple same or similar elements or portions withoutlimiting the present disclosure. The scope of the present disclosure isstill referred to as the scope defined by the claims.

Refer to FIG. 1, wherein FIG. 1 is a schematic perspective viewillustrating an optical member driving mechanism 1 in accordance with anembodiment of the present disclosure. It should be noted that, in thisembodiment, the optical member driving mechanism 1 may be, for example,a voice coil motor (VCM), which may be disposed in the electronicdevices with camera function for driving an optical member (such as alens), and can perform an autofocus (AF) function. In addition, theoptical member driving mechanism 1 has a substantial rectangularstructure, wherein a housing 10 of the optical member driving mechanism1 has includes a top wall 11 and four sidewalls 12, forming a firstcontaining space S1. An opening 13 is formed on the top wall 11 andcorresponds to the optical member (not shown). That is, an optical axisO may pass through the opening 13, such that light may enter into theoptical member driving mechanism 1 via the optical axis O.

FIG. 2 is an exploded view illustrating the optical member drivingmechanism 1 shown in FIG. 1. As shown in FIG. 2, the optical memberdriving mechanism 1 mainly includes a housing 10, a base 20, a carrier30, a driving assembly 40, a frame 50, a first elastic member 61, asecond elastic member 62, a circuit component 70, and a position-sensingassembly 80. In addition, the housing 10, the base 20, and the circuitcomponent 70 may constitute a fixed portion F, and the carrier 30 is amovable portion M. The housing 10 and the base 20 may be assembled as ahollow case. Therefore, the carrier 30, the driving assembly 40, theframe 50, the first elastic member 61, and the second elastic member 62may be surrounded by the housing 10, and thus may be contained in thecase (namely, disposed in the first containing space S1).

The carrier 30 has a hollow structure, and carries an optical memberwith an optical axis O. The frame 50 is disposed on the base 20 andaffixed to the housing 10. In addition, the carrier 30 is movablyconnected to the housing 10 and the base 20. To be more specific, thecarrier 30 may be connected to the frame 50 through the first elasticmember 61, the carrier 30 may also be connected to the base 20 throughthe second elastic member 62, and the first elastic member 61 and thesecond elastic member 62 are metallic materials. Therefore, the carrier30 is movably suspended between the frame 50 and the base 20.

The driving assembly 40 includes two driving coils 41 and two magneticmembers 42. The driving coils 41 are disposed on the carrier 30, and themagnetic members 42 may be disposed on the frame 50. When a current isapplied to the driving coils 41, an electromagnetic driving force may begenerated by the driving coils 41 and the magnetic members 42 to drivethe carrier 30 and the optical member carried therein to move alongZ-axis (the optical axis O) relative to the base 20. Therefore, theautofocus (AF) function is performed. The position-sensing assembly 80includes a position sensor 81 and a reference member 82, wherein theposition sensor 81 is disposed on the frame 50, and the reference member82 is disposed in the carrier 30. The position sensor 81 may detect theposition of the reference member 82, such that the position of thecarrier 30 and the optical member may be determined.

FIG. 3 is a cross-sectional view illustrating along line A-A′ shown inFIG. 1. As shown in FIG. 3, the carrier 30 and the frame 50 are disposedbetween the housing 10 and the base 20. In other words, the carrier 30and the frame 50 are disposed in the first containing space S1 of thehousing 10. In the present embodiment, the carrier 30 includes apositioning portion 31 protruding towards one of the sidewalls 12 of thehousing 10. As viewed in a horizontal direction (Y-axis), thepositioning portion 31 and the frame 50 are disposed on opposite sidesof the optical member driving mechanism 1. The detailed descriptionregarding the relationship between the positioning portion 31 and theframe 50 will be provided in accompany with FIG. 4 as follows. Theelectrical contact 271C is electrically connected to an external circuit(not shown). The shortest distance D1 between the electrical contact271C and the top wall 11 is longer than the shortest distance D2 betweenthe electrical contact 271C and the base 20.

FIG. 4 is a top view illustrating the carrier 30 and the frame 50 shownin FIG. 1. As shown in FIG. 4, the frame 50 includes three rims 51,forming a second containing space S2. The carrier 30 is disposed in thesecond containing space S2. Two of the rims 51 are respectivelycorrespond to the driving coils 41, and the magnetic members 42 (shownin FIG. 2) are disposed on the rims 51. In addition, the frame 50further includes two protruding portions 52 that protrude from the rims51 where the magnetic members 42 are disposed, and an opening is formedbetween the protruding portions 52. The protruding portions 52 have asurface facing the positioning portion 31 of the carrier 30. In otherwords, the positioning portion 31 is located between the protrudingportions 52. Thanks to the arrangement of the protruding portions 52,the positioning portion 31 may be positioned at an appropriate position,such that the carrier 30 may be prevented from rotating on a horizontalplane (X-Y plane). Damping materials 90 are disposed between the carrier30 and the frame 50. Therefore, buffer effect may be provided when thecarrier 30 is moving, such that the carrier 30 may reach thepredetermined position more rapidly. For example, the damping materials90 may be disposed at four corners of the carrier 30.

FIG. 5 is a top view illustrating the optical member driving mechanism 1shown in FIG. 1. As shown in FIG. 5, the center of the opening 13 (thatis, the position of the optical axis O) may be offset from the center ofthe optical member driving mechanism 1, namely, offset from the geometrycenter of the housing 10. In other words, a first thickness T1 betweenthe edge of the opening 13 and one sidewall 12 may be greater than asecond thickness T2 between the edge of the opening 13 and the oppositesidewall 12. Thanks to the design that the thickness of one side of theoptical member driving mechanism 1 is greater, more space may beprovided for arranging the display region of the electronic devices.That is, the area that the display region of the electronic devices andthe optical member driving mechanism 1 overlap may be increased. As aresult, the electronic devices that the optical member driving mechanism1 is disposed therein may further meet the current demand to theconsumers.

FIG. 6 is a cross-sectional view illustrating the optical member drivingmechanism 1 in accordance with an embodiment of the present disclosure.In the present embodiment, the frame 50 includes a first surface 53, asecond surface 54, and a third surface 55, wherein the first surface 53and the second surface 54 are towards the housing 10, and the thirdsurface 55 is towards the base 20. In other words, the first surface 53,the second surface 54 and the third surface 55 are located on oppositesides of the frame 50. As shown in FIG. 6, the first surface 53 ishigher than the second surface 54, which means the spacing between thefirst surface 53 and the top wall 11 is shorter than the spacing betweenthe second surface 54 and the top wall 11. In some embodiment, the firstsurface 53 may abut the housing 10. The first elastic member 61 isdisposed on the second surface 54, and thereby the space for arrangingthe first elastic member 61 between the housing 10 and the frame 50 maybe omitted. Therefore, the overall height of the optical member drivingmechanism 1 may be reduced.

Furthermore, the second elastic member 62 is disposed on the thirdsurface 55. As a result, a structure that the second elastic member 62rests on is not required to be disposed on the base 20. The structure ofthe base 20 may be simplified, such that the manufacturing cost of thebase 20 may be reduced, and the miniaturization of the optical memberdriving mechanism 1 may be achieved. In some embodiments, the circuitcomponent 70 is partially exposed from the third surface 55 andelectrically connected to the second elastic member 62. The drivingassembly 40 is electrically connected to the circuit component 70 viathe second elastic member 62.

FIG. 7 is a cross-sectional view illustrating the optical member drivingmechanism 1 in accordance with another embodiment of the presentdisclosure. As shown in FIG. 7, in the present embodiment, only thefirst elastic member 61 is disposed in the optical member drivingmechanism 1, such that the suspended center of gravity of the firstelastic member 61 is closer to the center of the optical member (notshown). As a result, the carrier 30 may move more stably, and theoverall height of the optical member driving mechanism 1 may be reduced.In other embodiments, only the second elastic member 62 is disposed inthe optical member driving mechanism 1, and the overall height of theoptical member driving mechanism 1 may also be reduced. In addition,thanks to arranging single elastic member, the manufacturing cost may bereduced.

FIG. 8 is a side view illustrating the frame 50 and the circuitcomponent 70 in accordance with an embodiment of the present disclosure.In the present embodiment, the circuit component 70 is formed in theframe 50 by insert molding. In addition, recesses 56 are formed on alateral side of the frame 50 in order to accommodate an electronicelement 71 and the position sensor 81. In other words, the frame 50 maysurround the electronic element 71 and the position sensor 81. Theelectronic element 71 and the position sensor 81 are electricallyconnected to the circuit component 70. For example, the electronicelement 71 may be a capacitor, and may filter noise in the electricalsignals. The position sensor 81 is configured to detect the position ofthe reference member 82 such that the position of the optical member maybe determined. Although two recesses 56 are disposed in the presentembodiment for containing the electronic element 71 and the positionsensor 81, however, single recess 56 may also be disposed for containingthe electronic element 71 and the position sensor 81 in someembodiments. Thanks to arranging the circuit component 70 in the frame50, no conductive structure is required to be disposed in the frame 50such that the thickness of the base 20 may be effectively reduced.

FIG. 9 is a partial perspective view illustrating the optical memberdriving mechanism 1 in accordance with an embodiment of the presentdisclosure. As shown in FIG. 9, the housing 10 has a bonding portion 14that is located at a corner of the housing 10 and extends downwardsalong Z-axis. The base 20 has a recess 21 corresponding to the bondingportion 14. In other words, after the housing 10 and the base 20 arecombined, the bonding portion 14 and the recess 21 may at leastpartially overlap as viewed in a direction that is perpendicular to theZ-axis (the optical axis O). In addition, when the housing 10 and thebase 20 are combined, a step D may be formed by the bonding portion 14and the recess 21. An adhesive may be filled into the step D so as tofirmly connect the housing 10 and the base 20. Thanks to the arrangementof the step D, the overflowing issue of the adhesive may be reduced. Insome embodiments, the housing 10 and the base 20 are formed by metallicmaterial, and are connected to each other in a welding or solderingmanner.

FIG. 10 is a cross-sectional view illustrating along line B-B′ shown inFIG. 1. As shown in FIG. 10, the first elastic member 61 may beelectrically connected to the circuit component 70. In addition, thehousing 10 has an insulating structure 15 that abuts the first elasticmember 61. Therefore, the short circuit issue due to the electricalconnection between the first elastic member 61 and the housing 10 may beprevented. In some embodiments, the first elastic member 61 may beelectrically connected to the circuit component 70 by soldering. Inother embodiments, the first elastic member 61 may be electricallyconnected to the circuit component 70 by arranging a conductive gel. Insome embodiments, the housing 10 may recess downwards along the opticalaxis O at the place where the first elastic member 61 is electricallyconnected to the circuit component 70. Accordingly, the housing 10 abutsthe first elastic member 61 in order to enhance the bonding strengthbetween the first elastic member 61 and the circuit component.

FIG. 11 is a perspective view illustrating an optical member drivingmechanism 1A in accordance with another embodiment of the presentdisclosure. As shown in FIG. 11, the optical member driving mechanism 1Ahas a substantial rectangular structure, wherein a housing 110 of theoptical member driving mechanism 1A has includes a top wall 111 and foursidewalls 112. An opening 113 is formed on the top wall 111 andcorresponds to the optical member (not shown). That is, an optical axisO may pass through the opening 113, such that light may enter into theoptical member driving mechanism 1A via the optical axis O. It should benoted that a bonding portion 114 is formed on the top wall 111 andcorresponds to a fixed column 151 of a frame 150 (shown in FIG. 12). Inthe present embodiment, the bonding portion 114 may be a hole, and thefixed column 151 may be inserted into the bonding portion 114 in orderto complete the assembly and achieve the positioning effect.

FIG. 12 is an exploded view illustrating the optical member drivingmechanism 1A shown in FIG. 11. It should be noted that the opticalmember driving mechanism 1A in the present embodiment may include thesame or similar elements to the optical member driving mechanism 1 shownin FIG. 2, and those same or similar elements are labeled with similarnumerals and will not be described in detail again. As shown in FIG. 12,the optical member driving mechanism 1A mainly includes a housing 110, abase 120, a carrier 130, a driving assembly 140, a frame 150, a firstelastic member 162, a second elastic member 161, a circuit component170, and a reference member 182. For example, the circuit component 170may be a printed circuit board (PCB), a flexible printed circuit (FPC),or any other suitable circuit board. The circuit component 170 may bedisposed on one side of the frame 150, and may transmit electric signalsto driving coils 141 in the optical member driving mechanism 1A. Inaddition, the position sensor (not shown) may be disposed on the circuitcomponent 170, and may detect the position of the reference member 182so as to determine the position of the carrier 130.

FIG. 13 is a perspective view illustrating the frame 150, the carrier130, and the second elastic member 161 in accordance with an embodimentof the present disclosure. As shown in FIG. 13, the frame 150 includes afixed column 151, a protruding portion 152, a positioning structure 153,a first abutting surface 154, and a second abutting surface 155. Thefixed column 151 protrudes from four corners of the frame 150 along theZ-axis, and may be positioned with the bonding portion 114 (shown inFIG. 11) of the housing 110. Furthermore, the fixed column 151 may beprovided for arranging the second elastic member 161. In other words,the fixed column 151 is the connecting point between the second elasticmember 161 and the frame 150. The second elastic member 161 is disposedbetween the housing 110 and the frame 150. As viewed in a direction thatis perpendicular to the optical axis O, the size of the frame 150 may begreater than or equal to the size of the second elastic member 161. Thatis, the second elastic member 161 does not extend out of the frame 150along a horizontal direction (X-Y plane). In addition, as viewed alongthe optical axis O, the second elastic member 161 may overlap with twosides of the frame 150, and the former two sides are opposite sides ofthe frame 150. The second elastic member 161 may also overlap with thedriving assembly 140 (including the driving coils 141 and magneticmembers 142) on the two sides.

The protruding portion 152 is located on one side of the frame 150, andprotrudes from the frame 150 along the Z-axis (namely, optical axis O).In some embodiments, the top surface of the protruding portion 152 islevel with the top surface of the second elastic member 161. Therefore,the overall height of the optical member driving mechanism 1A may bereduced, achieving miniaturization. In addition, the positioningstructure 153 is disposed on a lateral side of the frame 150. Thepositioning structure 153 is disposed between the driving coil 141 andthe magnetic member 142. When the magnetic member 142 is disposed on theframe 150, the magnetic member 142 is located between the positioningstructure 153 and the housing 110. If the magnetic member 142 abuts thepositioning structure 153, it can be determined that the magnetic member142 has been disposed at correct position. Therefore, the difficulty ofthe assembly may be reduced.

The first abutting surface 154 and the second abutting surface 155 aredisposed on one side of the frame 150 and configured to abut the circuitcomponent 170. Accordingly, the stability of arranging the circuitcomponent 170 may be enhanced. If the size of the circuit component 170is small, the circuit component 170 may abut the first abutting surface154. Rather, if the size of the circuit component 170 is large, thecircuit component 170 may abut the second abutting surface 155. In thepresent embodiment, the protruding portion 152, the first abuttingsurface 154, and the second abutting surface 155 are disposed on thesame side of the frame 150. Therefore, if the circuit component 170abuts the first abutting surface 154, the protruding portion 152 and thecircuit component 170 may at least partially overlap as viewed along theoptical axis O.

FIG. 14 is a bottom view illustrating the frame 150, the carrier 130,and the first elastic member 162 in accordance with another embodimentof the present disclosure. As shown in FIG. 14, the frame 150 furtherincludes protruding columns 156 and holes 157. The protruding columns156 and the holes 157 are disposed on a lower surface of the frame 150(namely, the surface that faces the base 120). The first elastic member162 is connected to the frame 150 at the protruding columns 156 and theholes 157. During the assembly, the protruding columns 156 may beconfigured for positioning the first elastic member 162, and the holes157 are configured for filling an adhesive so as to affix the firstelastic member 162 to the frame 150. It should be noted that in someembodiments, a gap is formed between the frame 150 and the base 120, andthe frame 150 and the base 120 do not directly contact. For example, thegap may be configured to fill the adhesive in order to combine the frame150 and the base 120.

FIG. 15 is a perspective view illustrating the carrier 130 and thecircuit component 170 in accordance with an embodiment of the presentdisclosure. In the present embodiment, the driving coils 141 aredisposed on opposite sides of the carrier 130, and a connecting wire141A is disposed between the driving coils 141. The driving coils 141are electrically connected via the connecting wire 141A. The connectingwire 141A is disposed on one side of the carrier 130, and the circuitcomponent 170 is disposed on another side that is opposite to the sidewhere the connecting wire 141A is disposed. In other words, theconnecting wire 141A and the circuit component 170 at least partiallyoverlap as viewed in a direction that is perpendicular to the opticalaxis O.

FIG. 16 is a perspective view illustrating the carrier 130 in accordancewith another embodiment of the present disclosure. As shown in FIG. 16,the carrier 130 includes a wiring column 131, a first stopping portion132A, and a second stopping portion 132B. It should be noted that in thepresent embodiment, the first stopping portion 132A and the secondstopping portion 132B may be referred to as “stopping portions 132A,132B.” The wiring column 131 is disposed on a lateral side of thecarrier 130 for wiring the driving coil 141, and is electricallyconnected to the circuit component 170. The stopping portions 132A, 132Bare disposed on the carrier 130 and protrude from a lower surface(namely, the surface that faces the base 120) of the carrier 130. Thefirst stopping portion 132A and the second stopping portion 132B areeach located on different sides of the carrier 130. In the presentembodiment, the size of the first stopping portion 132A is greater thanthe size of the second stopping portion 132B. In other words, thedistance between the first stopping portion 132A and the base 120 isshorter than the distance between the second stopping portion 132B andthe base 120.

In some embodiments, the insulating layer 122 (shown in FIG. 12) is notdisposed on the position, which corresponds to the stopping portions132A, 132B, of the base 120. As viewed along the optical axis O, thefirst stopping portion 132A, the second stopping portion 132B and theinsulating layer 122 do not overlap. As a result, the overall height ofthe optical member driving mechanism 1A may be reduced, achievingminiaturization. In addition, as shown in FIG. 16, recesses are disposedat the corners of the upper surface of the carrier 130, except for thecorner where the reference member 182 is disposed. That way, more spaceis provided for the second elastic member 161 to move.

As set forth above, an optical member driving mechanism including aframe, where a circuit component is disposed, is provided in theembodiments of the present disclosure. By means of embedding the circuitcomponent into the frame, the interior structure of the optical memberdriving mechanism may be simplified, and/or the structural strength ofthe optical member driving mechanism may be enhanced. In addition, insome embodiments, the elastic member is disposed on a surface of theframe. That way, the overall height of the optical member drivingmechanism may be reduced, such that miniaturization is achieved.

FIG. 17 is a schematic perspective view illustrating an optical memberdriving mechanism 1B in accordance with an embodiment of the presentdisclosure. It should be noted that, in this embodiment, the opticalmember driving mechanism 1B may be, for example, a voice coil motor(VCM), which may be disposed in the electronic devices with camerafunction for driving an optical member (such as a lens), and can performan autofocus (AF) function. In addition, the optical member drivingmechanism 1B has a substantial rectangular structure, wherein a housing210 of the optical member driving mechanism 1B has includes a top wall211 and four sidewalls 212. Each of the top wall 211 and the sidewalls212 has a plate structure. The top wall 211 and the sidewalls 212 areformed in one piece. An opening 213 is formed on the top wall 211 andcorresponds to the optical member (not shown). That is, an optical axisO′ may pass through the opening 213, such that light may enter into theoptical member driving mechanism 1B via the optical axis O′.

FIG. 18 is an exploded view illustrating the optical member drivingmechanism 1B shown in FIG. 17. As shown in FIG. 18, the optical memberdriving mechanism 1B mainly includes a housing 210, a base 220, acarrier 230, a driving assembly 240, a frame 250, an elastic member 260,a first circuit assembly 271, a position-sensing assembly 280, anddamping materials 290. In addition, the housing 210, the base 220, andthe frame 250 may constitute a fixed portion F′, and the carrier 230 isa movable portion M′. The base 220 has a plate structure. The base 220is parallel to the top wall 211. The housing 210 and the base 220 may beassembled as a hollow case. Therefore, the carrier 230, the drivingassembly 240, the frame 250, the elastic member 260 may be surrounded bythe housing 210, and thus may be contained in the case. Accordingly, thehousing 210, the frame 250, and the base 220 are sequentially arrangedalong the optical axis O′. In other words, the light may sequentiallypass through the housing 210, the frame 250, and the base 220 and reachan image device (not shown) that is disposed out of the optical memberdriving mechanism 1B such that an image is generated.

The carrier 230 has a hollow structure, and carries an optical memberwith an optical axis O′. The frame 250 is disposed on the base 220 andaffixed to the housing 210. In addition, the carrier 230 is movablyconnected to the housing 210 and the base 220. The elastic member 260 isdisposed between the housing 210 and the frame 250. To be more specific,the carrier 230 may be connected to the frame 250 through the elasticmember 260, which is made of metallic materials. Therefore, the carrier230 is movably suspended between the frame 250 and the base 220.

The driving assembly 240 includes two driving coils 241 and two magneticmembers 242. The driving coils 241 are disposed on the carrier 230, andthe magnetic members 242 may be disposed on the frame 250. When acurrent is applied to the driving coils 241, an electromagnetic drivingforce may be generated by the driving coils 241 and the magnetic members242 to drive the carrier 230 and the optical member carried therein tomove along Z-axis (the optical axis O) relative to the base 220.Therefore, the autofocus (AF) function is performed. In otherembodiment, the positions of the driving coils 241 and the magneticmembers 242 are interchangeable. In other words, the driving coils 241may be disposed on the frame 250, and the magnetic members 242 may bedisposed on the carrier 230. That way, the autofocus (AF) function mayalso be achieved.

The position-sensing assembly 280 includes a position sensor 281 and areference member 282, wherein the position sensor 281 is disposed on thebase 220, and the reference member 282 is disposed in the carrier 230.The position sensor 281 may detect the position of the reference member282, such that the position of the carrier 230 and the optical membermay be determined. Accordingly, the driving assembly 240 may drive themovable portion M′ to move relative to the fixed portion F′ based on theresult detected by the position sensor 281.

FIG. 19 is a cross-sectional view illustrating along line C-C′ shown inFIG. 17. As shown in FIG. 19, the first circuit assembly 271 is disposedin the frame 250 and partially exposed from an upper surface of theframe 250. The frame 250 is fixedly connected to the top wall 211. Theshortest distance D3 between the carrier 230 and the top wall 211 islonger than the shortest distance D4 between the frame 250 and the topwall 211. In the present embodiment, the first circuit assembly 271 iselectrically connected to a driving unit that is disposed out of theoptical member driving mechanism 1B, and transmits electric signals tothe driving coils 241 for controlling the operation of the opticalmember driving mechanism 1B. The first circuit assembly 271 iselectrically connected to the driving coils 241 via the elastic member260. In other words, the elastic member 260 may be electricallyconnected to the first circuit assembly 271 and the driving coils 241.

FIG. 20 is a perspective view illustrating the frame 250 and the firstcircuit assembly 271 in accordance with an embodiment of the presentdisclosure. In the present embodiment, the frame 250 includes twoprotruding portions 251 that extend along the optical axis O′ towardsthe base 220. In addition, the first circuit assembly 271 is formed inthe frame 250 by insert molding. The first circuit assembly 271 includesa first electrical contact 271A and a second electrical contact 271B,wherein the first electrical contact 271A and the second electricalcontact 271B are located on a plane of the frame 250, and the plane isperpendicular to the optical axis O′. The first circuit assembly 271 iselectrically connected to the driving coils 241 via the first electricalcontact 271A and the second electrical contact 271B. Therefore, theelectric signals may be transmitted to the driving coils 241. As shownin FIG. 20, the first circuit assembly 271 has a stereoscopic structure,namely, the first circuit assembly 271 may distribute on a plurality ofplanes (including X-Y planes, Y-Z planes, and/or X-Z planes).

It should be noted that although the first circuit assembly 271 isformed by insert molding in the present embodiment, however, thoseskilled in the art may also form the first circuit assembly 271 by laserdirect structuring (LDS) or any other suitable method. In otherembodiments, the first circuit assembly 271 may be a printed circuitboard (PCB) that is disposed on the frame 250.

FIG. 21 is a perspective view illustrating the base 220 and the secondcircuit assembly 272 in accordance with an embodiment of the presentdisclosure. As shown in FIG. 21, the base 220 has a plurality ofrecesses 221 that are located on a lateral side of the base 220 andextend along the optical axis O′. In the present embodiment, the secondcircuit assembly 272 is disposed in the recesses 221. The second circuitassembly 272 may be electrically connected to the position sensor 281and the driving unit that is disposed out of the optical member drivingmechanism 1B. Therefore, the electric signals may be transmitted betweenthe position sensor 281 and the driving unit. It should be appreciatedthat in some embodiments, the base 220 may be made of metallic materialsso as to reduce the thickness of the base 220 in Z-axis. Accordingly, inthe above embodiments, an insulating layer (not shown) is disposed onthe base 220 in order to prevent the short circuit generated due to thedirect contact between the base 220 and the second circuit assembly 272.

In some embodiments, the second circuit assembly 272 has a stereoscopicstructure, distributing on a plurality of planes. In other words, thesecond circuit assembly 272 may extend onto an upper surface of the base220, and/or extend in a direction that is not parallel to the opticalaxis O′. In some embodiments, as viewed in a direction (X-axis) that isperpendicular to the optical axis O′, the first circuit assembly 271 andthe second circuit assembly 272 partially overlap.

The position sensor 281 is disposed on the base 220, and detects theposition of the reference member 282 that is located in the carrier 230.For example, the position sensor 281 may be a Hall effect sensor, amagnetoresistance (MR) sensor (such as a tunnel magnetoresistance (TMR)sensor), or any other suitable sensor. Yokes 281A are disposed onopposite sides of the position sensor 281. Thanks to the arrangement ofthe yokes 281A, the magnetic field generated by the reference member 282may be concentrated, such that the position sensor 281 may detect theposition of the optical member more precisely, enhancing the performanceof the optical member driving mechanism 1B.

FIG. 22 is top view illustrating an interior structure of the opticalmember driving mechanism 1B shown in FIG. 17. It should be noted that inorder to clearly illustrate the position of the damping materials 290,the housing 210 and the elastic member 260 are not shown in the presentembodiment. As shown in FIG. 22, the damping materials 290 are disposedbetween the protruding portions 251 of the frame 250 and the carrier230. Therefore, resonance effect may be avoided generated in the opticalmember driving mechanism 1B, and the carrier 230 may be positionedrapidly after arriving the predetermined position, enhancing theefficiency of auto-focusing. It should be appreciated that although fourdamping materials 290 are disposed in the present embodiment, however,those skilled in the art may adjust the quantity and positions of thedamping materials 290 as required, as long as at least one dampingmaterial 290 is disposed.

As set forth above, an optical member driving mechanism including aframe and a base, where circuit assemblies are disposed, is provided inthe embodiments of the present disclosure. Thanks for arranging thecircuit that transmits electric signals respectively on the frame andthe base, the circuit inside the optical member driving mechanism may besimplified, and the difficulty of wiring and designing may be reduced.In addition, damping materials are disposed between the protrudingportions of the frame and the movable portion so as to avoid resonanceeffect generated in the optical member driving mechanism. That way, thecarrier may also be positioned rapidly after arriving the predeterminedposition, enhancing the performance of the optical member drivingmechanism.

FIG. 23 is a schematic perspective view illustrating an optical memberdriving mechanism 1C in accordance with an embodiment of the presentdisclosure. It should be noted that, in this embodiment, the opticalmember driving mechanism 1C may be, for example, a voice coil motor(VCM), which may be disposed in the electronic devices with camerafunction for driving an optical member (such as a lens), and can performan autofocus (AF) function. In addition, the optical member drivingmechanism 1C has a substantial rectangular structure, wherein a housing310 of the optical member driving mechanism 1C has includes a top wall311 and four sidewalls 312. An opening 313 is formed on the top wall 311and corresponds to the optical member (not shown). That is, light maypass through the opening 313 via a main axis O″ and enter into theoptical member driving mechanism 1C.

In addition, the optical member driving mechanism 1C has a first surface314 and a second surface 315, wherein the first surface 314 is lowerthan the second surface and located at four corners of the housing 310.In other words, the first surface 314 is closer to a base 320 (shown inFIG. 2) of the optical member driving mechanism 1C than the secondsurface 315. Thanks to the arrangement the higher second surface 315,the space provided for an elastic member inside the optical memberdriving mechanism 1C may be increased, enhancing the reliability of theoperation of the optical member driving mechanism 1C.

FIG. 24 is an exploded view illustrating the optical member drivingmechanism 1C shown in FIG. 23. As shown in FIG. 24, the optical memberdriving mechanism 1C mainly includes a housing 310, a base 320, acarrier 330, a driving assembly 340, a frame 350, a first elastic member361, a second elastic member 362, a circuit component 370, and areference member 382. In addition, the housing 310, the base 320, andthe frame 350 may constitute a fixed portion F″, and the carrier 330 isa movable portion M″.

The housing 310 and the base 320 may be assembled as a hollow case.Therefore, the carrier 330, the driving assembly 340, the frame 350, thefirst elastic member 361, and the second elastic member 362 may besurrounded by the housing 310, and thus may be contained in the case.Accordingly, the housing 310, the frame 350, and the base 320 aresequentially arranged along the main axis O″. In other words, the lightmay sequentially pass through the housing 310, the frame 350, and thebase 320 and reach an image device (not shown) disposed out of theoptical member driving mechanism 1C, generating an image. In addition,the housing 310 has a first magnetic permeability, the base 320 has asecond magnetic permeability, and the first magnetic permeability isdifferent from the second magnetic permeability. In some embodiments,the first magnetic permeability is greater than the second magneticpermeability, but it is not limited thereto.

The carrier 330 has a hollow structure, and carries an optical memberwith an optical axis, which is parallel to the main axis O″. The frame350 is disposed on the base 320 and affixed to the housing 310. Inaddition, the carrier 330 is movably connected to the housing 310 andthe base 320. The first elastic member 361 is disposed between thehousing 310 and the frame 350, and the second elastic member 361 isdisposed between the frame 350 and the base 320. To be more specific,the carrier 330 may be connected to the frame 350 via the first elasticmember 361 and the second elastic member 362, wherein the first elasticmember 361 and the second elastic member 362 are metallic materials.Therefore, the carrier 330 is movably suspended in the frame 350 andmoves between the housing 310 and the base 320 along the main axis O″.

The driving assembly 340 includes two driving coils 341 and two magneticmembers 342. The driving coils 341 are disposed on the carrier 330, andthe magnetic members 342 may be disposed on the frame 350. When acurrent is applied to the driving coils 341, an electromagnetic drivingforce may be generated by the driving coils 341 and the magnetic members342 to drive the carrier 330 and the optical member carried therein tomove along Z-axis (namely, the main axis O″) relative to the base 20.Therefore, the autofocus (AF) function is performed. In otherembodiment, the positions of the driving coils 341 and the magneticmembers 342 are interchangeable. In other words, the driving coils 341may be disposed on the frame 350, and the magnetic members 342 may bedisposed on the carrier 330. That way, the autofocus (AF) function mayalso be achieved.

The circuit component 370 is disposed on one side of the frame 350, andextends along the main axis O″. In the present embodiment, the circuitcomponent 370 and the magnetic members 342 are located on differentsides of the frame 350. In addition, the reference member 382 isdisposed in the carrier 330. The reference member 382 and a positionsensor 381 (shown in FIG. 25A), which is disposed on the circuitcomponent 370, constitute a position-sensing assembly. Thanks forarranging the position sensor 381 and the reference member 382 on thesame side of the frame 350, the position sensor 381 may detect theposition of the reference member 382 so as to determine the position ofthe carrier 330 and the optical member.

FIG. 25A is a cross-sectional view illustrating along line D-D′ shown inFIG. 23. As shown in FIG. 25A, the housing 310 and the base 320 arealigned on one side, where the circuit component 370 is disposed, of theframe 350. Therefore, the housing 310 and the base 320 are positionedduring the assembly. Rather, the housing 310 and the base 320 are notaligned on another side, where the circuit component 370 is notdisposed, of the frame 350. FIG. 25B is an enlarged view illustratingregion P shown in FIG. 25A. As shown in FIG. 25B, a step D is formed bythe housing 310 and the base 320. A laser sintering process may beperformed at the step D in order to combine the housing 310 and the base320. That way, the bonding force between the housing 310 and the base320 may be significantly increased, making it difficult for the opticalmember driving mechanism 1C to disintegrate because of external forces.It should be appreciated that although the step D is only shown in oneside of the optical member driving mechanism 1C, however in someembodiments, the step D may be disposed on all sides where the circuitcomponent 370 is not disposed.

In the present embodiment, the housing 310 and the base 320 do notoverlap as viewed in a direction perpendicular to the main axis O″.Accordingly, the structures of the housing 310 and the base 320 may besimplified, and the overall height of the optical member drivingmechanism 1C may be reduced. In addition, the base 320 includes abarrier 321 that extends away from the housing 310 along the main axisO″ (Z-axis). The barrier 321 abuts the circuit component 370 in a firstdirection (X-axis), and the first direction is perpendicular to the mainaxis O″. Thanks to the arrangement of the barrier 321, stable support tothe circuit component 370 may be provided, and the structural strengthand stability of the optical member driving mechanism 1C may beenhanced. Furthermore, the position sensor 381 is disposed on thecircuit component 370. For example, the position sensor 381 may be aHall effect sensor, a magnetoresistance (MR) sensor, such as a tunnelmagnetoresistance (TMR) sensor, or any other sensor that may detectmagnetic fields.

FIG. 26A is a partial perspective view illustrating the interiorstructure of the optical member driving mechanism 1C in accordance withan embodiment of the present disclosure. It should be noted that inorder to clearly illustrate the detailed structure of the frame 350, thehousing 310 and the base 320 are omitted in FIG. 26A, and the bottom(the side facing the base 320) of the carrier 330 and the frame 350 areillustrated as the top side. As shown in FIG. 26A, protruding columns351 are formed at corners of the frame 350 and extend towards the base320 along the main axis O″. In other words, the first surface 314 andthe protruding columns 351 may overlap. It should be understood thatalthough only one of the protruding columns 351 of the frame 350 isshown in the present embodiments, however, the same or similar structuremay be formed at the other corners of the frame 350, and will not berepeated again.

FIG. 26B is a cross-sectional view illustrating along line E-E′ shown inFIG. 26A. As shown in FIG. 26B, the protruding column 351 has a firstsection 351A and a second section 351B, wherein the first section 351Ais closer to the base 320 than the second section 351B. The shortestdistance between the first section 351A and the carrier 330 is longerthan the shortest distance between the second section 351B and thecarrier 330. Therefore, the protruding column 351 has a taperingstructure that extends downwards. Thanks to the arrangement of thetapering structure, making it easier for the assembly of the frame 350and the carrier 330. In some embodiments, at least one damping materialis disposed between the carrier 330 and the protruding column 351,wherein the damping material may be disposed between the carrier 330 andthe protruding column 351 from the bottom of the frame 350. Since largerspace is formed between the frame 350 and the carrier 330, it isprevented that the damping material flows to an unexpected position dueto capillary phenomenon.

In addition, referring back to FIG. 26A, a first recess R1 is formed ona lateral side of the carrier 330, and the reference member 382 isdisposed in the first recess R1. An adhesive may be filled into thefirst recess R1 so as to affix the reference member 382 into the firstrecess R1. It should be understood that the first recess R1 does notexpose from an upper surface and a lower surface of the carrier 330. Inother words, a portion of the carrier 330 may be located between thereference member 382 and the housing 310 or the base 320. As a result,the reference member 382 is not attracted by the housing 310 or the base320, which are made of metallic materials, and move upwards ordownwards. Also, the reference member 382 would be avoided damaged dueto collisions in Z-axis. The carrier 330 includes a first stoppingportion 331 that protrudes towards the base 320. As viewed along themain axis O″, the reference member 382 and the first stopping portion331 overlap. Thanks to the above design, the required space for thecarrier 330 may be significantly reduced. The miniaturization of theoptical member driving mechanism 1C may be achieved.

FIG. 27 is a partial perspective view illustrating the interiorstructure of the optical member driving mechanism 1C shown in FIG. 23.It should be noted that in order to clearly illustrate the detailedstructure of the frame 350, the bottom (the side facing the base 320) ofthe carrier 330 are illustrated as the top side. As shown in FIG. 27,the frame 350 includes a protruding portion 352, and a hole 353 isformed between the protruding portion 352 and the circuit component 370.The second elastic member 362 includes a first electrical contact 362Athat extends into the hole 353 and is electrically connected to thecircuit component 370. An adhesive may be filled into the hole 353 so asto affix the second elastic member 362 to the circuit component 370.Thanks to the arrangement of the protruding portion 352, the adhesivemay be effectively prevented from overflowing out of the hole 353.

In the present embodiment, the circuit component 370 is disposed on theframe 350, and a second recess R2 is formed between the circuitcomponent 370 and the frame 350. An adhesive may be filled into thesecond recess R2 so as to affix the circuit component 370 to the frame350. The frame 350 further includes a positioning portion 354, whereinthe magnetic member 342 is disposed in the frame 350, and thepositioning portion 354 is located between the magnetic member 342 andthe housing 310. Thanks to the arrangement of the positioning portion354, when the magnetic member 342 is disposed in the frame 350, whetherthe magnetic member 342 reaches correct position may be effectivelydetermined, which facilitates the assembly. In addition, after themagnetic member 342 is disposed in the frame 350, grooves 355 are eachdisposed on opposite sides of the magnetic member 342. An adhesive maybe filled into the grooves 355 so as to affix the magnetic member 342 tothe frame 350.

Furthermore, the carrier 330 includes a second stopping portion 332 thatprotrudes towards the base 320. The distance between the second stoppingportion 332 and the base 320 is shorter than the distance between thesecond elastic member 362 and the base 320. As a result, the probabilitythat the second elastic member 362 directly collides with the base 320may be reduced, such that short circuit may be avoided, or the secondelastic member 362 is prevented from damaged.

FIG. 28A is a bottom view illustrating the optical member drivingmechanism 1C in accordance with an embodiment of the present disclosure,and FIG. 28B is an enlarged view illustrating region Q shown in FIG.28A. As shown in FIGS. 28A and 28B, a gap 322 is formed between thebarrier 321 and the base 320 along a second direction (Y-axis), and thesecond direction is perpendicular to the main axis O″ (Z-axis) and thefirst direction (X-axis). Thanks to the arrangement of the gap 322, whenthe barrier 321 is formed, the probability that burrs are generated onthe barrier 321 and the base 320 may be reduced, and the manufacturingyield of the optical member driving mechanism 1C is increased.

FIG. 29 is a bottom view illustrating the interior structure of theoptical member driving mechanism 1C in accordance with an embodiment ofthe present disclosure. As shown in FIG. 29, the grooves 355 are formedbetween the frame 350 and the magnetic member 342 and located on aconnecting line of two adjacent protruding columns 351, wherein theconnecting line is parallel to X-axis or Y-axis. The second elasticmember 362 further includes a plurality of second electrical contacts362B, and extending directions of the second electrical contacts 362Bare different. As viewed along the main axis O″, the second electricalcontacts 362B and wiring columns 335 of the carrier 330 overlap, and thesecond electrical contacts 362B are electrically connected to thedriving coils 341 via the wiring columns 335. Accordingly, electricsignals may be transmitted between the circuit component 370 and thedriving coils 341 via the second elastic member 362. In the presentembodiment, the extending direction (such as parallel to X-axis) of thefirst electrical contact 362A is not parallel to the extending direction(such as parallel to Y-axis) of the second electrical contact 362B.

FIG. 30 is a bottom view illustrating the frame 350 and the carrier 330shown in FIG. 29. The carrier 330 further includes at least one sidestopping portion 333 that is located at a corner of the carrier 330. Theside stopping portion 333 faces the frame 350 in a direction that isperpendicular to the main axis O″ (namely, parallel to the X-Y plane).For example, the side stopping portion 333 may be an L-shaped structure,and the frame 350 also has a structure that corresponds to the sidestopping portion 333. As a result, the spacing between the frame 350 andthe side stopping portion 333 is substantially uniform. Thanks to thearrangement of the side stopping portion 333, the carrier 330 may beeffectively prevented from rotating around the main axis O″ relative tothe frame 350. In addition, the frame 350 and the carrier 330 partiallyoverlap as viewed along the main axis O″. To be more specific, the frame350 may overlap with the side stopping portion 333 and the wiring column335.

FIG. 31 is a perspective view illustrating the interior structure of theoptical member driving mechanism 1C in accordance with an embodiment ofthe present disclosure. As shown in FIG. 31, the carrier 330 furtherincludes an upper stopping portion 334 and an adhesive groove 336,wherein the upper stopping portion 334 protrudes towards the housing 310along the main axis O″, and the adhesive groove 336 is disposed insidethe carrier 330 and adjacent to the upper stopping portion 334. In someembodiments, in the manufacturing process of the optical member drivingmechanism 1C, the upper stopping portion 334 and the adhesive groove 336may be configured for positioning the fixture. In addition, when theoptical member is mounted onto the carrier 330, an adhesive may befilled into the adhesive groove 336 so as to affix the optical member tothe carrier 330.

As set forth above, the embodiments of the present disclosure providesan optical member driving mechanism including a frame and a movableportion, wherein the frame includes a protruding column, and thedistance between the protruding column and the movable portion isincreasing towards the base. By means of designing the protruding columnas a downward tapering structure, a damping material may be disposedbetween the frame and the movable portion from the bottom. As a result,the movable portion may reach the predetermined position more rapidly,and the performance of the optical member driving mechanism may beenhanced. In addition, the housing and the base are combined by a lasersintering process. The structural strength of the optical member drivingmechanism may also be enhanced.

While the embodiments and the advantages of the present disclosure havebeen described above, it should be understood that those skilled in theart may make various changes, substitutions, and alterations to thepresent disclosure without departing from the spirit and scope of thepresent disclosure. In addition, the scope of the present disclosure isnot limited to the processes, machines, manufacture, composition,devices, methods and steps in the specific embodiments described in thespecification. Those skilled in the art may understand existing ordeveloping processes, machines, manufacture, compositions, devices,methods and steps from some embodiments of the present disclosure. Aslong as those may perform substantially the same function in theaforementioned embodiments and obtain substantially the same result,they may be used in accordance with some embodiments of the presentdisclosure. Therefore, the scope of the present disclosure includes theaforementioned processes, machines, manufacture, composition, devices,methods, and steps. Furthermore, each of the appended claims constructsan individual embodiment, and the scope of the present disclosure alsoincludes every combination of the appended claims and embodiments.

What is claimed is:
 1. An optical member driving mechanism, comprising:a fixed portion, comprising: a housing comprising a top wall and asidewall, wherein the top wall and the sidewall each have a platestructure, and the top wall and the sidewall are formed in one piece; aframe, affixed to the housing, fixedly connected to the top wall; and abase, having a plate structure, fixedly connected to the housing,wherein a containing space is formed between the housing and the base,and the frame is located in the containing space, and the base isparallel to the top wall; a movable portion, movably connected to thefixed portion, carrying an optical member, wherein the optical memberhas an optical axis, and the frame and the movable portion at leastpartially overlap as viewed along a direction perpendicular to theoptical axis; a driving assembly driving the movable portion to moverelative to the fixed portion; a first circuit assembly, fixedlydisposed on the frame, electrically connected to the driving assembly;an electrical contact, for being electrically connected to an externalcircuit, wherein the shortest distance between the electrical contactand the top wall is longer than the shortest distance between theelectrical contact and the base; and a second circuit assembly disposedon the base; wherein the shortest distance between the movable portionand the top wall is longer than the shortest distance between the frameand the top wall.
 2. The optical member driving mechanism as claimed inclaim 1, further comprising a position-sensing assembly, wherein theposition-sensing assembly detects the movement of the movable portionrelative to the fixed portion, and the second circuit assembly iselectrically connected to the position-sensing assembly.
 3. The opticalmember driving mechanism as claimed in claim 1, wherein the housing, theframe, and the base are sequentially arranged along the optical axis. 4.The optical member driving mechanism as claimed in claim 1, wherein theframe has a plurality of protruding portions extending towards the base.5. The optical member driving mechanism as claimed in claim 4, furthercomprising a damping material disposed between the protruding portionsand the movable portion.
 6. The optical member driving mechanism asclaimed in claim 1, wherein the driving assembly drives the movableportion to move along the optical axis.
 7. The optical member drivingmechanism as claimed in claim 1, wherein the first circuit assemblycomprises a first electrical contact and a second electrical contact,and the first electrical contact and the second electrical contact arelocated on a plane of the frame.
 8. The optical member driving mechanismas claimed in claim 1, wherein the first circuit assembly has astereoscopic structure distributing on a plurality of planes.
 9. Theoptical member driving mechanism as claimed in claim 8, wherein thesecond circuit assembly has a stereoscopic structure distributing on aplurality of planes.
 10. The optical member driving mechanism as claimedin claim 1, wherein the first circuit assembly and the second circuitassembly partially overlap as viewed in a direction that isperpendicular to the optical axis.
 11. The optical member drivingmechanism as claimed in claim 1, wherein the first circuit assembly iselectrically connected to the second circuit assembly.
 12. The opticalmember driving mechanism as claimed in claim 1, further comprising anelastic member disposed between the housing and the frame, wherein theelastic member is electrically connected to the driving assembly and thefirst circuit assembly.
 13. An optical member driving mechanism,comprising: a fixed portion, comprising: a housing comprising a top walland a sidewall, wherein the top wall and the sidewall each have a platestructure, and the top wall and the sidewall are formed in one piece; aframe, affixed to the housing, fixedly connected to the top wall; and abase, having a plate structure, fixedly connected to the housing,wherein a containing space is formed between the housing and the base,and the frame is located in the containing space, and the base isparallel to the top wall; a movable portion, movably connected to thefixed portion, carrying an optical member, wherein the optical memberhas an optical axis, and the frame and the movable portion at leastpartially overlap as viewed along a direction perpendicular to theoptical axis; a driving assembly driving the movable portion to moverelative to the fixed portion; at least one damping material disposedbetween the frame and the movable portion; and an electrical contact,for being electrically connected to an external circuit, wherein theshortest distance between the electrical contact and the top wall islonger than the shortest distance between the electrical contact and thebase; wherein the shortest distance between the movable portion and thetop wall is longer than the shortest distance between the frame and thetop wall.
 14. The optical member driving mechanism as claimed in claim13, further comprising a position-sensing assembly, wherein theposition-sensing assembly detects the movement of the movable portionrelative to the fixed portion.
 15. The optical member driving mechanismas claimed in claim 14, further comprising a first circuit assembly anda second circuit assembly, wherein the first circuit assembly isdisposed on the frame and electrically connected to the drivingassembly, and the second circuit assembly is disposed on the base andelectrically connected to the position-sensing assembly.
 16. The opticalmember driving mechanism as claimed in claim 13, wherein the frame has aplurality of protruding portions extending towards the base.
 17. Theoptical member driving mechanism as claimed in claim 16, wherein the atleast one damping material is disposed between the protruding portionsand the movable portion.